Revenue Recognition - Deferred Revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	$ 37,784
Deferred revenue, current portion	7,404	$ 50,125
Deferred revenue, Long-term	21,318	22,805
Deferred revenue	28,722	$ 72,930
BGI Genomics
Deferred revenue, current portion	3,200
Deferred revenue, Long-term	20,400
Foundation Medicine ("FMI")
Deferred revenue, current portion	500
Deferred revenue, Long-term	900
BGI Genomics and Foundation Medicine ("FMI")
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	8,900
Revenue recognized	4,300
Qiagen
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	28,600
Genetic testing services and provision of IVD kits
Revenue recognized during the period that was included in deferred revenues at the beginning of the period	$ 300